An enantio- and stereocontrolled synthesis of (–)-mycestericin E via cinchona alkaloid-catalyzed asymmetric Baylis–Hillman reaction
作者:Yoshiharu Iwabuchi、Mariko Furukawa、Tomoyuki Esumi、Susumi Hatakeyama
DOI:10.1039/b106471c
日期:——
A new enantiocontrolled synthesis of a potent immunosuppressant(-)-mycestericin E has been accomplished by using cinchona alkaloid-catalyzed asymmetric Baylis-Hillman reaction of an aldehyde with 1,1,1,3,3,3-hexafluoroisopropyl acrylate and Lewis acid-promoted cyclisation of an epoxytrichloroacetimidate as the key steps.
通过使用金鸡纳生物碱催化的醛与1,1,1,3,3,3-六氟异丙基丙烯酸酯和路易斯酸-的金鸡纳生物碱催化的不对称Baylis-Hillman反应,完成了强力免疫抑制剂(-)-mycestericin E的新对映体控制合成。促进环氧三氯乙酰亚胺酸酯的环化为关键步骤。